名校
1 . 抛物线
的焦点坐标是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b1183df9f26985febdc844cda75ed4c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 如图,椭圆
和圆
,已知椭圆C的离心率为
,直线
与圆O相切.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/19/4449f2dd-e3a8-458c-894c-3ef28ec2c138.png?resizew=173)
(1)求椭圆C的标准方程;
(2)椭圆C的上顶点为B,EF是圆O的一条直径,EF不与坐标轴重合,直线BE、BF与椭圆C的另一个交点分别为P、Q,求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3324199c6751f2e0e6d8542783b0d957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b4bcb812c997db47214cb52c905f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c14ff9b66f21c05e52dc3c8908c2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26e366e3d5391b401cf4cd4fc970403.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/19/4449f2dd-e3a8-458c-894c-3ef28ec2c138.png?resizew=173)
(1)求椭圆C的标准方程;
(2)椭圆C的上顶点为B,EF是圆O的一条直径,EF不与坐标轴重合,直线BE、BF与椭圆C的另一个交点分别为P、Q,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fdb8865ae357b7a16b6a30cf4a9e592.png)
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3 . 已知椭圆
:
的左、右焦点分别是
,
,若椭圆上两点
,
满足
,且
,则椭圆
的离心率为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788c985e9fe1a51c9ae2da0fef2aa0a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b890e05549c86ecd088bcad938507f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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4 . 已知直线的方向向量为
,则向量
在直线
上的投影向量坐标为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知点
是椭圆
上的一点,
是椭圆的左、右焦点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
A.存在点![]() ![]() | B.![]() |
C.![]() ![]() | D.![]() |
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6 . 如图,正方体
的棱长为2,
为
的中点,
为棱
上的动点(包含端点),则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
A.存在点![]() ![]() | B.存在点![]() ![]() |
C.四面体![]() ![]() | D.点![]() ![]() ![]() |
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四川省内江市第六中学2023-2024学年高二下学期入学考试数学试题四川省攀枝花市普通高中2023-2024学年高二上学期教学质量监测数学试题卷四川省眉山市彭山区第一中学2023-2024学年高二下学期4月月考数学试题(已下线)第二章 立体几何中的计算 专题六 空间定值问题 微点1 立体几何中的定值问题综述及定长、定距问题【培优版】
名校
7 . 如图,在平行六面体中,记
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/b3dab8d3-dd56-4544-a0dc-3c188ab0caa7.png?resizew=172)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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8 . 在直三棱柱
中,若
,则
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9660c3c8418332f34c4676002303b0a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd4c85bb98a2a0afddd7ed92578ad2e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 设
、
是椭圆
:
(
)与双曲线
:
(
,
)的公共焦点,曲线
、
在第一象限内交于点
,
,若椭圆的离心率
,则双曲线的离心率
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cff730b8025a2ce7e75576a6d74ff3a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e0ddeac5d77078e2453f9402b40553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c24aa150ab51ba82f69384dcf0b0b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b967232e28ad0d453adc66676bdf8b2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98f1ea30341eb5d584710c3aebc64ce8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74404619ad5699e6c44c947fb569600f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3abaf8a0ab635874a62142e5be77eafa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33a99190a8fd29c36d5a002e3197cc5.png)
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10 . 已知椭圆
:
(
)的左、右顶点分别为
,且
,离心率为
,
为椭圆
的右焦点,
为坐标原点.
(1)求椭圆
的方程;
(2)过
且斜率为1的直线交椭圆
于
、
两点,求
的面积;
(3)设
是椭圆
上不同于
的一点,直线
、
与直线
分别交于点
、
.证明:以线段
为直径的圆过定点,并求出定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57dfc9d1109fe41145cc892b5702d9fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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